Shuttle



I. snow.

SHUTTLE.

APPLICATION FILED JULY 28, 1920.

1,369,306- Patented Feb. 22, 1921.

UNITED STATES ISAAC SNOW, OF LAWRENCE, MASSACHUSETTS.

Specification of Letters Patent. Patented F b. 22 1921 Application filed July 28, 1920. Serial No. 399,564.

1 To all whom it may concern Be it knownthat I, ISAAC SNow, a citizen of the United States, residing at Lawrence, in'the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shuttles, of which the following is a specification.

My invention is an improvement in shuttles, particularly of the self threading type for weft replenishing looms such as is shown in patent on shuttles issued to me on June 29, 1920, No. 1,344,734. 7

In such patent I showed a guide plate which slopes down and back and ends in a guide hook, together with an. overlapping part at the front and back, or either of them, whereby the thread would slip into the guide hook and would be locked in place.

My present invention consists substantially in providing overlapping pins at the front and the back, or either of them, for locking the thread in the guide hook, and its advantages are'that it is a cheaper construction and that if it permits the use of special pins, such as those made of steel or porcelain, which will not readily wear out, andwhich can be replacedif they do wear out.

It may also be so arranged that the relation of the locking'pin' to the guide hook can .be changed or adjusted.

In the drawings, Figure 1 is a plan view of the front end of a shuttle, with a metal threading block to which is attached and in whichis embodied my invention.

Fig. 2 is an-elevation of the threading block, removed from the shuttle, as seen from the side opposite the shuttle eye outlet.

Fig. 3 is an elevation of the back end of the threading shuttle.

Fig. 4 is a sectional elevation on line 44 of Fig.- 1, as viewed from the right, 2'. 0., from the direction of the arrows, with the back locking pin passing through the wood.

Fig. 5 is a view similar to Fig. 4, with the back pin bent out of position.

Fig. 6 is a view similar to Figs. 4 and 5, except that the hook is much shorter and the back pin passes through the metal instead of the wood.

Fig. 7 is a variation of the construction shown in Fig. 6.

Fig. 8 is a view similar to Fig. 4 showing how the back pin can be bent into position.

block removed from the,

Fig.9 is a view similar to Fig. 7 of a modified construction.

S 1s a shuttle having the usual bobbin chamber 10 for the bobbin B, from which the thread A is unwound. 12 is the threading chamber which extends forward in coning block F is set into the wood of theshuttle and may be fixed therein by means of a screw 36 which passes through a hole in the shuttle and a hole 35 in the block in a well known manner. Preferably, there is at the bottom of block .F the projection 84 which sets into a recess in the wood of the shuttle.

Forming part of threading block F is the thread directing guide plate G, which extends from the top thereof and the top side of the shuttle down into the threading chamber, preferably from the nose 19 which extends forward of the shuttle eye outlet H at 22 downward and outward into the threading chamber, its bottom rim preferably extending also down and back and terminating in a thread retaining hook guide 24 at a point back of the shuttle eye.

The front end ofblock F preferably ter- P a back thread locking pin 20 in such posi:

tion that it overlaps said guide hook. As shown clearly 'in Fig. 4, when the thread slips down around inside of guide hook 24, it is doubly locked in position by front thread pin 33 and back thread pin 20.

As shown in Fig. 5, if the back pin 20 should be bent out of shape, the front pin 33 would still serve as a lock and, as shown in Fig. 6, if the front pin, such as 41, is misplaced so that it does not overlap the hook 40, the back pin 43 will still look the thread in position. It may occur that the hook 40 is not bent sufficiently to reach front pin such as 41, in which case the back pin will lock it sufliciently in position. In other words, if either pin is out of action the other will serve its proper function.

As shown in Fig. 6, the pin 43, instead of being passed through the wood as is 20, is passed through the metal at 44 and 45, such metal being extended back beyond hook 40 for that purpose.

In Fig. 7, the hook 40 is shown as being short, as just extending far enough so that To protect the wood of the shuttle from chafing, I may drive the metal staple M into the wood, as shown in Fig. 1.

As shown in Fig. 9, a pin 70, which might be considered the back locking pin or an intermediate pin, may be driven throughthe wood at 71, the metal at 72, Or both, as shown, so as to extend into and preferably across the threading chamber proximate and, insteadof behind, in front of and overla gping the guide hook 40. V v

y boring other pin holes, such as indicated at X and Y, Fig. 9, the position of the pin with relation to the guide hook may be altered by inserting it in any hole desired.

I claim:

1. A shuttle threader having a longitudinal threading chamber and a thread directing guide plate which extends from the top into such threading chamber, said guide plate having a bottom rim which slopes down and back through the threading cham. her and at the side slopes down and out, a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, a front thread pin which extends down into the threading chamber in front of and overlapping said guide hook, and a back thread locking pin which extends across the threading'chamber behind andoverlapping said guide hook.

2. A'shuttle threader having a longitw dinal threading chamber and a thread directing guide plate which extends down and out from the top into such threading chamber, a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, a front thread pin which extends down into the threading chamber in front of and overlapping said guide hook, and a back thread locking pin which extends across the threading chamber behind and overlapping said guide hook.

3'. A shuttle" threader having a longitudinal threading chamber and a thread directing guide plate which extends down and out from the top into such threading chamber, a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, and a front thread pin which extends down into the threading chamber in front of and overlap ping said guide hook.

4:. A shuttle threader having a longitudinal threading chamber and a thread directing guide plate which extends down and out from the top into such threading chamber, a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, and a back thread locking pin which extends across the threading chamber behind and overlapping said gui e hook.

5. A shuttle tlireader having a longitudinal threading chamber and a thread directing. guide plate which extends down and out from the top into such threading chamber, a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, and a thread locking pin which extends across the threadlng chamber proximate and overlapping said guide hook.

6. A shuttle threader having a longitudinal threading chamber and a thread directing guide plate which extends down and out from the top into such threading chamber. a thread retaining guide hook which extends from and under the back part of the thread directing guide plate, and a thread locking pin which extends into the threadin chamber proximate and overlapping said guidebook.

In testimony whereof K have a'fiixed my signature.

ISAAC SNOEV. 

